On December 15, KBS reps told media, "There is no collaboration stage featuring Uhm Jung Hwa and MAMAMOO's Hwa Sa at the 'Song Festival' on the 29th." It'd been mistakenly reported the legendary diva and talented songstress would be working together for an interpretation of Uhm Jung Hwa's past hit "Invitation".

How epic would that have been! The 'KBS Song Festival' is airing on the 29th with Park Bo Gum and AOA's Seolhyun as the hosts.